ilio-tibial band continuous with deep fascia inserts into the antero-lateral surface of the proximal tibia (Gerdy’s Tubercle)
Middle layer
Superficial lateral ligament from the lateral epicondyle to the styloid process of the fibula & is tight in extension but lax in flexion (femoral attachment lies behind the axis of rotation)
Deep layer
Capsular thickening which is poorly developed & runs from the lateral condyle to the head of the fibula & does not attach to the meniscus ® lateral meniscus is more mobile
Pathology
Usually associated with cruciate injuries or posterolateral corner injuries & significant instability
Isolated LCL injuries are rare & can be treated nonsurgically
Treatment
Nonoperative
Isolated LCL injuries
rare
Operative
If associated secondary restraints are torn
→ complete lateral complex injury (ie opens in extension)
Options
Acute
Direct repair ± biceps tenodesis to lateral epicondyle of femur
Chronic instability
advancement , augmentation or reconstruction
e.g. ITB augmentation, biceps tenodesis of the posterolateral corner
